Rear Wheel HP

[vandacoot]

Finally got my car booked into kwinana performance to get the holley tuned and timing done. had a go at the timing myself and got it the best i could but still no good. Holley i would not have a clue about... :'(

anyway they gunna put it on the dyno and tune it right up which i'm really looking forward to.

So just wondering what peoples thoughts are too what hp i could expect, going to get a print out tomorrow of the results, so i'll post them up.

ute is a 4 speed 4.1

only mods are:

genie extractors that go into a single 2 1/4 that splits into two 2 1/4 at the diff.
redline torker manifold
350 holley

engine was rebuilt ~ 2 years ago (i think)

i remember figures of around 97rwhp from factory, given engine ago and so on... should i be hoping for around 110 rwhp?

[TheMaDDeSTMaN]

I'd be expecting more then 110rwhp, that sort of figure is possible from just a healthy 4.1 with extractors and a better exhaust. Not sure exactly what to expect, but should be more then 110rwhp.

[ICEWOLF]

well i got 136rwhp from a stock efi crossflow with extractors and a pod filter so aim above that maybe?

[vandacoot]

got new jets, plugs. distributor cap and rotar before the tune.

results were roughly what i had estimated.

114.6HP

[windjackel]

nice work shows what a couple of nice easy mods can do. all you need is a nice cam to set it off. i think a dead standard carby motor would struggle with 100rwhp.

[BIGCAV]

got new jets, plugs. distributor cap and rotar before the tune.

results were roughly what i had estimated.

114.6HP

is that a little low, just looking at the graph and compared to mine it is fairly rough, with the 2 dips in power across the range.

mine that was rebuilt and had the head shaved pulled 80.2 rwkw about 40,000km after the rebuild. thats 107.5 rwhp

i would of expected more since youve got extractors, carby etc, and your head was prob shaved when it was rebuilt anyway.

do u know how much torque it had at the rears, mine pulled 260rwnm?

[vandacoot]

hrmm, was looking around the net and found this.

XF Falcon
1984 XF Fairmont Ghia
Production October 1984–February 1988
278,101 Units produced
Engine(s) Alloy Head II Straight Six

* 3.3 L 200 in³ 90 kW
* 4.1 L 250 in³ 103 kW
* 4.1L 250 in³ 120 kW EFI

103kw is 138.12hp, that would not be at the wheel tho.

[BIGCAV]

yeah thats at the flywheel, and thats leaded models too, carby unleaded was 97.5 kw

is your car an auto or manual

[Xe250t]

i would have expected a little higher than that.

[vandacoot]

4 speed manual but was originally auto,

also dunno how much torque.

[BIGCAV]

id still be happy with that. i think the auto's had a slightly different cam which had more torque at a lower rpm i think, might make a slight difference

if u are interested u can work out the torque from the tractive effort, thers a formula somewhere on the net, i used to do all the calculations for our tafe dyno and if u want and if i can be ****ed i could maybe work it out for u with some more info

[vandacoot]

http://www.wentec.com/unipower/calculators/power_torque.asp

but i dunno what the rev's were at when it peaked at 114hp

[BIGCAV]

ok cool, u could guestimate it off the graph, also if im reading the grpah rite which is hard cause its so small it may be running a little rich, is that peak power at 11.5:1? not that its that rich but 12.5:1 is optimum

[BIGCAV]

hmmm thats a different way to work it out, its still just as aqurate but my way used tractive effort and all your ratios and wheel diamtres had to be known, thats much better, i was 5 nm off with it so its accurate enough

[Pinkie]

well i got 136rwhp from a stock efi crossflow with extractors and a pod filter so aim above that maybe?

what would you estimate mine to be at?.....when we raced you were about a car length ahead...and i have an auto.

[BIGCAV]

what sort of distance are u talking, iv raced my mates vl commodore and he has 15kw on me and we were only a car length apart after we had hit 80km/h, suprising the difference the 70rwnm had

[drew442]

did they do anything to the carby on the dyno?

it should peak before it tails off like that, its probably way too rich on the power valve. do you have a restrictor in the PVCR?

[vandacoot]

dunno what a power valve is, but they replaced it. dunno what a PVCR is either.

had the holley tuned while it was on the dyno, i wasnt there but asked them to do it.

[BIGCAV]

id get them to reset the ratio to 12.5:1 i thought it was a tad rich to

[Pinkie]

what sort of distance are u talking, iv raced my mates vl commodore and he has 15kw on me and we were only a car length apart after we had hit 80km/h, suprising the difference the 70rwnm had

it was till about 100kph or more i think..it was a fair distance...he didnt creep away but was about a car length the whole way

[xfute]

good hey mate my first engine had a sports exhust and extrators and i was useing the webber it pulled 116rwhp on the kwinni dyno

[xfute]

and it had a t5 in it

[BIGCAV]

do u have a copy of the dyno run, i wouldnt mind comparing them, iv been trying to find mine but to no avail

[xfute]

man ill just go have a look

[xfute]

scanning it now the utes going on the dyno this thurs larst time my new motor made 180rwhp and the throttle cable wasent adjusted right so i just put a new one on and adjusted it so its now opening full throttle and runs to lean so hopefully when they turn it and re jet it i can grab 190ish rwhp with a little luck

[xfute]

hears my run with the webber and sports exhust and extractors

[drew442]

i dont know about your tune vandacoot, that graph doesnt look right

[BIGCAV]

yeah, its running a little lean in my opinion,

the power curve is very weird and sharp, most 250's iv seen are alot smoother than that,

did they stall the motor up before the run with the dyno brake thing

[BIGCAV]

woh sorry that was about xfute, not vandacoot

[Nufnsus]

vandacoot and xfute....

what does a dyno sesh at kwinni set you back?

[vandacoot]

dyno tune was 170 for me, + parts.

think just for a read out, it'd have to be less then 50.

[xfute]

a read out is like 50 bucks and i usealy get a survice and dyno tune for $350 and my dyno readout looks normal to me i think it all depends what mode they use vandacoots dyno looks strange to me lol

[lowxdute]

Nothing wrong with xfutes dyno sheet it's just slightly too lean at 12.9:1 but pretty close and sweet air/fuel ratio line very straight. I'd be happy with that line man! So you got 180-190rwhp now, what mods for that. I've got 150ishrwhp at the moment.
ZAC

[ICEWOLF]

here is my dynosheet from ages ago. any comments would be much appreciated

[BIGCAV]

evan tho i get shot down every graph lol, that looks alot like a very decent tune, reasonably evan power and the a/f is pretty good considering its a ford efi, i seen much worse ratios and spikes/changes on newer model efi cars

id be happy with that, has something been done to it at that point?

[xfute]

yeah my ute pulled 192rwhp the other day feels heeps nicer now they said now that my cams run in i need to increase the spring pressure to let it rev and it shoul get low 200ish rwhp what are your thoughts

[Pinkie]

http://i123.photobucket.com/albums/o296/YAI-RXF/05190024.jpg

not in hp but yeah....not sure if theres anything rong with it as im not sure how to read it lol

[xd??]

is that like 102hp?
this is my crappy dyno sheet.....
look at my intake temp..somethings wrong need a decent tune first id say...
http://img186.imageshack.us/img186/1449/pic30339fs2wg1.jpg (http://imageshack.us)

[BIGCAV]

lol i hope thats in farenheight, 230, lol

my old push bike made more power than that!

[Pinkie]

bigcav any ideas on mine?

[xd??]

i think its running a little hot...or they had the sensor wrong////

[BIGCAV]

bigcav any ideas on mine?

just to be clear im no expert lol

id be happy with that, a tad lean from what iv been taught but not worrysome, from that im guessing its a carby and relativly stock or auto.? but seems like its got a typical 4.1 power curve

got a question for ya what sort of gears to u have in that, peak power at 150km/h in 3rd. thats whats making me think auto with long gears?

[BIGCAV]

from the little dyno experiance iv had it was taught to me by dom form dyno dynamics who is the guy who trains all the current owners of dyno dynamics dyno's so i tkae it that it was correct.

here is a copy of one i found that was done before we had the training by dom, when the motor was stalled up against a load before it was released which can make a significant differance, with doms training i got 80.2 kw out of it and tho this is said by everybody not happy with there car lol it was running like a bucket of **** and in need of a service. lol

in seriousness on 98 i could maybe get 82 or so i guess

sorry about the fact it was a photo from my phone, my scanner isnt set up

[ICEWOLF]

evan tho i get shot down every graph lol, that looks alot like a very decent tune, reasonably evan power and the a/f is pretty good considering its a ford efi, i seen much worse ratios and spikes/changes on newer model efi cars

id be happy with that, has something been done to it at that point?

just extractors and a crappy pod filter. could get a whole lot more out of the car but new car to get ready first

[xf-087]

here is what my xf done nov 2005 before i put the cold air intake on her

4.1 efi auto 2.77diff

http://i27.photobucket.com/albums/c181/bilby351/bilbys%20pics/dyno09-11-05.jpg

[85ghia]

here is my dynosheet from ages ago. any comments would be much appreciated
Hey i remember that dyno run, i ran mine right before you. I got told my old car made 88kw at the wheels on about 3psi with stuffed turbo on the autotech dyno, and with a recoed turbo it made 105kw on about 9 or 10psi on Jake's so i think it was pretty accurate.

[BIGCAV]

here is what my xf done nov 2005 before i put the cold air intake on her

4.1 efi auto 2.77diff



id be happy with that, specially out of an auto, working on the 1/3 principle its mor e powerful than stock especially since its 20 years old lol, c the typical ford efi setup dropping to almost 11:1 at 104kph, and really spikey, its shows at the power curve, only way u can fix it is replace the cpu which isnt worht it, fair enough they richn it up for reliability but they can do it smooth lol.

id still be pleased with that

[Pinkie]

stock as a rock...auto....2.77 gears..carby

ill ge getting a holley 350 and a redline manifold soon...how much should i expect it to go up?. .1? lol

[crazy2287]

just extractors and a crappy pod filter. could get a whole lot more out of the car but new car to get ready first

I think you should take a closer look at your engine, id expect more then extractors and a podfilter to get an increase like that.

Id almost bet money you have at least got a cam in it.

[BIGCAV]

PINKIE: while iv never done it i wouldnt expect more than a few kw, maybe 3-4, since the weber does alright, it is supposed to be a bit more smooth up top but not so much more powerful, if your planning further mods in the future great idea. much more things avaiilable for holleys to, better filters and scoops etc, im going to be doing mine in the near future if i decide to go the petrol route on my new car. and they can be found plenty cheap off the net too,

if u r interested i can point u in the direction of one iv been aiming up on ebay but decided against as i should be finishing off my new car before i start modifing more **** lol.

crazy2287: it is quite a powerful beast, but not totally out of reach if its a manual with very decent extractor and pod filter, since most xf carbys are at around 75rwkw manual on unlead (97.5kw at fly stock) and efi are over 20fwkw up on that it is possible in theory for a good efi to get low 90's rw stock,

[kenny87]

Vandacoot, does the car run much better after the tune?? My holley runs like crap. Tell me, if u put the foot flat to the floor, wat does it do?

[drew442]

stock as a rock...auto....2.77 gears..carby

ill ge getting a holley 350 and a redline manifold soon...how much should i expect it to go up?. .1? lol

The holley will give you a later higher peak with better over run. You just have to get someone who knows how to modify it for the smaller engine. which i'm suspecting kenny hasnt done.

[BIGCAV]

is that like 102hp?
this is my crappy dyno sheet.....
look at my intake temp..somethings wrong need a decent tune first id say...
http://img186.imageshack.us/img186/1449/pic30339fs2wg1.jpg (http://imageshack.us)

that has been deliberatly dyno'd dodgily, they have screwed around with the intake temp sensor so htat it reads a higher temperature and the dyno trys to compensate and increases the power, im not saying its not 1400hp but its not a 1900hp machine.

unless that was done as a joke and it actually is your ute lol

[xd??]

its eddie tessone's vz ute with a twin turbo 383 chev i think...something like 40psi of boost going into it....
i was gonna try photoshop "xe falcon" but i couldnt be ****ed

[BIGCAV]

i still recon its been dodged, i doubt a car would run on over 200degrees intake temp, as the temp is supposed to be taken before the filter it also hasnt been compressed yet so no way the ambient temperature is 230 degrees lol.

[evan]

nah that's intake as in what's hitting the cylinders

ambient temp is 19deg

[BIGCAV]

when we tested cars with dyno dynamics, they had ambient temp but then intake temp is taken the air filter, it is supposed to be close to ambient but its at the air filter so as it shows how much the temp varies inside the engine bay due to radiator etc, they may do it diffeently but thats the same as what they did when when they ran an xr6 turbo, didnt move the tmep sensor, only placed a pressure sensor in, but hey big hp stuff they may do differently

[vandacoot]

Vandacoot, does the car run much better after the tune?? My holley runs like crap. Tell me, if u put the foot flat to the floor, wat does it do?

well the car idles now which it never use to do, even cold mornings it idles after the cold start. to drive it with out it sputtering i still need to let it warm up, once its warmed up at normal running temprature it runs fine, floor the pedal and it just goes, dodgey exhaust pings and pongs around but runs fine.

before the tune it would serge like it was flooding, too much fuel, would also backfire a little bit.

the tune has made it run %100 better.

[davis]

Lumpy 6 has some goat power, Here is a pic of the dyno a little while back .

[TUF250]

nice! whats been done to it?

[drew442]

he wont say, he never does. no point asking

[TUF250]

ah ok. thats fair enough. secret cam specs eh? ;) well its obviously tough as nails mate. well done

[davis]

Ty Tuff250.. I appreciate the honestly u reveal .

[lowxdute]

[QUOTE=davis;39407]Ty Tuff250.. I appreciate the honestly u reveal .
What's been done to the engine mate? If you put up the power level it'd would make sense to justify and humour people by actually saying what you did to it. Also is it fwhp or rwhp as the dyno doesn't say which makes me think it's fwhp. Not bad if that's the case, bout similar power level to my ute approx 155rwhp.
ZAC

[ltd351t]

Ty Tuff250.. I appreciate the honestly u reveal .

sounds like you dont really know much about it, why keep the details to yourself?

[XAGS]

Here are the dyno results for my XF Falcon - any feedback appreciated.

4.1 Unleaded
465 cmf Holly & Cain inlet manifold
Genie Extractors & 2.5" Exhaust
Crow Cam 2000rpm - 5000rpm (can remeber the cam specs)
Yella Terra Steet Rockers
5 Speed Supra box

I was hopping for more power than I got, its about 108 rwkw.

[TUF250]

still pretty good results for one of these motors. wouldve thought it would be a bit higher if the tune wa right for a large carby with a manual but maybe you didnt have a 'happy' dyno. would be a good strog car though i reckon

[outlaw]

Had my 89 ute dynoed today after they fitted my remapped dizzy. Got 106 RWKw, about 142 RWHP I think. The only thing is my tacho on the dash dont work anymore because the wiring from the original dizzy has been changed to suit the XE dizzy, so it dosent go through the computer. I'll have to check out the wiring to fix it. Ute runs better after the dizzy was fitted.

[XAGS]

Yeah I would have expected more with my engine but I dont think he got the tunning right. When you floor it the car pulls well, then about mid rage it feels to have a bit of flat spot, then hits about 3700rpm and pulls wickedly all the way to 5000rpm. But it did produce quite a lot of torque it spins both wheels easily from low rpm in first & second gear.

[davis]

The specs to my engine will die with me , ALL i am gonna say is that a person that builds drag engines built it for me, ANd all i know is that the horse power i got from it , was from a fu.cked up holley on it, A fella that tunes carbies for the cars at qld race way and he put it on the machine he has got, and said the same thing, WELL DONE . i have neva gone to a holley again , but now am stayin on the weber. Better carbie i say by miles..there is a secret to get the webers to go better, and it isnt in the fuel jets either. Any how nice to know that your . Well some are keen to know and the others that winge about it, are just plain sooks about it , TY to all honest post..

[davis]

Or should i say it is just a cam and a head work, heheh ill let u think about it , and spend money like i did

it cost me thousands

[metorical]

i pulled 126.5rwhp with a 350 holley and 2.5" exhaust

[lowxdute]

Your a tripper davis! "The specs will die with me".... Fair enough.
ZAC

[slydog]

The specs to my engine will die with me , ALL i am gonna say is that a person that builds drag engines built it for me, ANd all i know is that the horse power i got from it , was from a fu.cked up holley on it, A fella that tunes carbies for the cars at qld race way and he put it on the machine he has got, and said the same thing, WELL DONE . i have neva gone to a holley again , but now am stayin on the weber. Better carbie i say by miles..there is a secret to get the webers to go better, and it isnt in the fuel jets either. Any how nice to know that your . Well some are keen to know and the others that winge about it, are just plain sooks about it , TY to all honest post..

What's it do on the quarter bro?

[220xd]

hey was just reading you thread and thort i would post my dyno sheet up, let me know what you think...

[Tiapan]

hears my run with the webber and sports exhust and extractors

holy ****! who tuned that? the afr is soooo flat!

[Tiapan]

heh for a joke i took the pits version (skinny little tires, a macdonalds straw exhaust and all emmisions on) i thought it would read alot lower! with this exhaust on it is such a little
B!TCH car. i will do another run with some BIG tires and my street exhaust in a few weeks

http://i175.photobucket.com/albums/w160/Tiapan393/14072007082.jpg

[Tiapan]

notice at 4,000rpm (when the highstall and cam kick in) the power drops?? wtf, looks like wheelspin and exhaust choke, stay tuned there are bigger figures to come :P

[Tiapan]

whoops i just realised i posted in the 6cly section....still trying to find my way around this forum

[TUF250]

nice power figures guys

[xfute]

hey tiapan thought ya car sounded quiet the other day as u drove parst me lol tonny did my dyno tune at kwinni

[Tiapan]

yep it was the b!tch exhaust...sorry i didnt see you..was i speeding??

[xfute]

meh i was drinking near gull survo and herd this nice sounding v8 floor it parst and i looked and it was your beast i was like i know that dude to all my frends hahaha i gotta pull of my 2 and a harf inch exhust and get a poofy exhust for my baby and get all the emissions **** put back on oh and a engeeners report on my blower so pissed hey but once it passes on gose the 3ich exhust boy hahaha

[Tiapan]

bugga! good luck man. i will race you to get licenced, i need to raise the front so im waiting on spring compressors from the USA

[Nufnsus]

GET F#@KED!

Tiapan, i thought u were situated in Rockingham QLD?!
but its Rockingham, WA?
how on earth did/are you going to pass pits?

i always thought..."i'd love to see that car in flesh, pitty its all the way on the other side of the country!"

you planning on coming along some cruises sometime?

[Tiapan]

hahhaa it has been licensed with this engine before matey! for the last five years acctually!

i went and put a fu(kin bugcatcher on and got stickered, all i have to do is raise the front and label the switches, so hell yes i will be on the crusies!!

[Nufnsus]

sweeeeeeeeet....
spose i'll better make an effort nxt time, n catch ya there!

[Tiapan]

yep, and i should have a 450rwhp sheet by then :D :D :D

[Tiapan]

oh i was being serious. i re-read that and it sounded like sarcasim

[xfute]

hahaha thats nothing typan i got stickkerd for having a nail in my left tyer and a hole in my bonnet even though it was covered with my scoop and a make beleave oil leak even though the engines brand ****ing new think the copper was pissed cause he lost his batton up his ass the night b4 lol i gotta get a engenners cert yay

[Tiapan]

dont worry man, coppers like that got bashed and teased in school and they hide behind their badges to get a sense of toughness, most cops are really top blokes (im in the reserves with about 10 of em!)

[davis]

nice beast taipan. Like the tidyness

[Tiapan]

thanks man, shes only 70% complete

[xfute]

yeah very true tiapan ive met heeps that just pull u over to have a look cause there allways working and never have time 2 go 2 car shows lol oh and because they can wich is cool